George w



(No Model.)

G. W. BENTON.'

BOAT PLUG. No. 275,270. Patented Apr.3,18l813.

N. PEYERS. PhnwLlhngmpher, washington. n.6.

UNITED STATES ATENT OFFICE.

`GEORGE \V. RESTON, OF BROOKLYN, ASSIGNOR TO GERTR UDE E. RAYMOND, OF NEW YORK, N. Y.

BOAT-PLUG.

SPECIFICATION forming part of Letters Patent No. 275,270, dated April 3, 1883.

Application filed January 15, 1893. (No model.)

drain from the interior of the boat when it is' x5 swung upon davits, or otherwise elevated, and to close the opening when the boat is lowered into the water.

The objects ot' my improvements are to provide a simple, durable, and ellicient boat-plug zo in which the valves and valve-seats are not so liable to become clogged as in former constructions, in which the automatically-moviug valve is guided to its seat accurately when the boat is lowered into the water, and in 25 which the upper or screw valve shall have a conical bearing and a protected seat, so as to eftectually prevent incoming of water which may leak past the automatic or gravity valve, and in which the working parts shall be pro- 3o tected against damage during ordinary use.

To accomplish these objects my invention involves certain novel and useful arrangements or combinations of parts, peculiarities of construction, and details of manufacture, all

35 of which will be herein first fully described,

and then pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure l is an axial section of my improved boat-plug, the valves 4o being shown in opened position 5 and Fig. 2 is a similar view, showing the valves in closed position. Fig. 3 is a side elevation ot' the plug,

wherein the valves are shown in opened position, and Fig. 4, a similar view, showing the 45 valves in closed position. Fig. 5 is a plan ot' the bottom.

1n all these figures like letters of reference, wherever they occur, indicate corresponding parts` 5o A is the main plate of the plug, intended to cover the opening in the bottom ol' the boat.

It is securely screwed into place, so as to make a water-tight joint, and is preferably letinto the bottom, flush with the upper surface thereof, so as to permit all of the water -to drain 53 out ofthe boat. Upon the under side of this plate are cast or otherwise formed suitable arms, as a u, the lower ends of which are turned inward toward the center of the open ing in the plate, which ends catch the disk 6o when it has dropped far enough to give'suf` iicient opening for the water to pass freely, and hold and protect it in this position, to be closed again by the first pressure from beneath. Upon the upper surface is aninteriorly-screw- 6; threaded cylinder \vitl1i1rwhich the screw plug y or valve moves.

B is the iloat valve or disk, preferably made of cork or some light material, and covered with metal to afford strength and make aper- 7c feetly-tightjoint. It is more or less inclined on its upper surface, so that it will be seated easily, quickly, and accurately, a-nd the seat in the main plate is of course made to correspond.

C is the screw-valve, made inclined or eoni- 7; cal at bottom, so as to be capable of .being forced down firmly against its seat, and so as to form a close joint therewith all around, grinding out any sediment or foreign matte-r which may settle on the seat when the plug 8o is open.

The tloat valve or disk has a stein,- b, passing through a bridge, c, in the screw-valvc, and this stem guides the float-valve always accurately to its seat, whether the sere\\'plug 85 is turned np or down. The cylinder d, within lwhich the threaded valve moves, is supported by three or more pillars or segments of the circle, leaving five-sixths or so of the circle open as a free way for the water to pass to the 9o ter both the valves are open, as shown in Figs. l and 3. When lowered into water the gravity-valve automatically closes and prevents any inow. In case, after long use, the gravity-valve is not perfectly and entirely tight, the screw-plug is turned down and the opening thus eft'ectually closed. The device thus constructed and arranged will be found to admirably answer all the purposes and objects ot' the invention, as previously stated.

I am aware that boat-plugs have before been provided with a hinged gravityvalve, and also that a hollow plug has been located outside of a cylinder bearing upon a raised leather seat. To these t'orms I malte no claim; but,

Having now fully described kmy invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a boat-plug, theinteriorly-thrcaded cy linderpert'orated atintervals,leavin'gstandards around and outside of the valve-seat, and the exteriorly-threaded screw-plug having a conical end, said plug being movable up an `l down within tne perforated cylinder, all combined and arranged substantially as and for the purposes set forth.

2. In a boat-plug having a float-valve and a screw-valve governing the central opening, the vinteriorly-threaded cylinder perforated at intervals, leaving standards for the p1 otection of the'valve-seats, substantially as and for the purposes set forth. y

3. In a boat-plug, the conical iloat or gravity valve provided with a central stem passing through a suitable bridge or guide located in the screw-valve, and held in proper place by the arms connected with the main plate, substantially as and for the purposes set forth.

4. In a boat-plug having the two valves, the combination, with the exteriorly-threaded screw-valve and the interiorly-threaded perforated cylinder, of the securing-pin passing through the cylinder and arranged to prevent displacement otl the screw-valve, substantially as and for the purposes set forth.

In a boat-plug, the conical seats for the two conical valves made in the bottom or main plate for the purpose ot' allowing all water in the boat to pass freely out, said plate having the interiorly-screw-threaded cylinder above for supporting the plug-valve., and the arms below for supporting the float-valve, substantially as set i'orth.

In testimony that I claim the foregoing l have hereunto set my hand in the presence of two witnesses.

GEORGE W. BENTON.

Witnesses:

Gmo. W. PAYNTAR, I. W. Fit-Asus. 

